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  • Title: Alcohol consumption and blood pressure.
    Author: Jackson R, Stewart A, Beaglehole R, Scragg R.
    Journal: Am J Epidemiol; 1985 Dec; 122(6):1037-44. PubMed ID: 4061438.
    Abstract:
    The relationship between alcohol consumption and systolic and diastolic blood pressure was examined in a representative population sample of 1,429 men and women aged 35-64 years in Auckland, New Zealand during 1982. Univariate plots demonstrated a U-shaped relationship between alcohol consumption and systolic and diastolic blood pressures in men and in women aged 50 years and older, with light and moderate drinkers (less than 0-34 g alcohol/day) having lower blood pressure levels than either nondrinkers or heavy drinkers. No clear relationship was seen in younger women. The U-shaped relationship in men, particularly for systolic blood pressure, remained after controlling for potential confounders, whereas in women aged 50 years and older, there appeared to be a threshold level of approximately four drinks per day, below which drinkers had similar blood pressure levels to nondrinkers. In the multivariate analyses, it was calculated that among men, light and moderate drinkers had systolic levels 4.8 mmHg lower and diastolic levels 1.7 mmHg lower than nondrinkers and heavy drinkers, while among women aged 50-64 years, nondrinkers, light drinkers, or moderate drinkers had systolic levels 10.2 mmHg lower and diastolic levels 4.5 mmHg lower than heavy drinkers. These findings suggest that in men and in women aged 50 years and older, there is a nonlinear relationship between blood pressure and alcohol consumption, and that there is a level of alcohol consumption, of approximately four drinks per day, below which drinkers have either similar or lower blood pressure levels compared to nondrinkers.
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